Joining the Chief, we've got a rogues' gallery of other sci-fi icons, from Yoda to the Borg to what appears to be an Elton John impersonator (who knew? though it explains so many things...).
In the clip, they're all drinking weird, bubbling/smoking drinks and bopping along to this incredibly cheesy techno pop travesty our hero Master Chief is singing. Occasionally we get some bad CGI footage of flying through space and space battles. It's all very ... well, it's German. Is any further explanation needed? Just click through and see for yourself...